This application provides a bead with a covalently attached chemical compound and a covalently attached DNA barcode and methods for using such beads. The bead has many substantially identical copies of the chemical compound and many substantially identical copies of the DNA barcode. The compound consists of one or more chemical monomers, where the DNA barcode takes the form of barcode modules, where each module corresponds to and allows identification of a corresponding chemical monomer. The nucleic acid barcode can have a concatenated structure or an orthogonal structure. Provided are method for sequencing the bead-bound nucleic acid barcode, for cleaving the compound from the bead, and for assessing biological activity of the released compound.

This application provides a bead with a covalently attached chemical compound and a covalently attached DNA barcode and methods for using such beads. The bead has many substantially identical copies of the chemical compound and many substantially identical copies of the DNA barcode. The compound consists of one or more chemical monomers, where the DNA barcode takes the form of barcode modules, where each module corresponds to and allows identification of a corresponding chemical monomer. The nucleic acid barcode can have a concatenated structure or an orthogonal structure. Provided are method for sequencing the bead-bound nucleic acid barcode, for cleaving the compound from the bead, and for assessing biological activity of the released compound.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.

Provided are methods and systems useful for screening large libraries of effector molecules. Such methods and systems are particularly useful in microfluidic systems and devices. The methods and systems provided herein utilize encoded effectors to screen large libraries of effectors.